Most common adverse effects of inactivated polio vaccine (IPV)?

NORCET 2 -2021 (Shift-2)

Pharmacology

Medium

Appeared in: NORCET 2 -2021 (Shift-2)

Explanation

The Inactivated Polio Vaccine (IPV) is administered by injection, and its most common side effects are local reactions at the injection site.
These reactions include pain, tenderness, redness (erythema), and swelling or hardness (induration).
While a 'scar' is not the most frequent reaction itself, it is a potential result of the local inflammation at the injection site.
Among the given choices, 'Scar around injection site' is the only option that correctly points to the category of local injection-site reactions, which are the most common type of adverse effect for IPV.

Option B: Vaccine-Associated Paralytic Poliomyelitis (VAPP) is a risk associated with the live-attenuated Oral Polio Vaccine (OPV), not the Inactivated Polio Vaccine (IPV), which contains a killed virus and cannot cause polio.
Option C: Constipation is not a documented or expected adverse effect following the administration of the IPV.
Option D: Lordosis is a medical term for an inward curvature of the spine. It is a postural or orthopedic condition and has no relationship with vaccination.

Visual 1: Table: Comparison of Inactivated Polio Vaccine (IPV) vs. Oral Polio Vaccine (OPV). This table helps differentiate the two vaccine types, their administration routes, the type of immunity they confer, and their distinct adverse effect profiles, clarifying why VAPP is linked to OPV and not IPV.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Adverse effects of Inactivated Polio Vaccine (IPV) as background academic context rather than a clinical decision trigger.
It is crucial for nurses to accurately inform parents and caregivers about expected vaccine side effects to ensure compliance and reduce anxiety. For IPV, this involves explaining that mild, temporary pain or redness at the injection site is normal.
Differentiating between the side effect profiles of IPV and OPV is a key patient safety and education point, especially in regions where both vaccines may be in use or have been used historically.
What if? If a parent reports fever and a large, hard, painful swelling at the injection site after an IPV dose, the nurse should advise on comfort measures like a cool compress and an age-appropriate dose of paracetamol, and instruct the parent to monitor for signs of infection, while reassuring them that this is a more pronounced local reaction and not a systemic illness like polio.

How to Approach the Question

First, identify the key subject of the question: 'Inactivated Polio Vaccine (IPV)'. Note the keyword 'inactivated' (killed virus).
Next, recall the route of administration for IPV, which is an injection.
Based on the route, anticipate that the most common side effects will likely be related to the injection site (local reactions).
Evaluate the options: 'Scar around injection site' relates to a local reaction. 'VAP' is paralysis, a severe systemic effect. 'Constipation' is a GI issue. 'Lordosis' is a spinal deformity.
Eliminate the clearly incorrect options. Lordosis and constipation are unrelated. VAP is famously associated with the live oral polio vaccine (OPV), not the inactivated one.
This leaves 'Scar around injection site' as the only plausible answer, as it falls under the category of local reactions, even if it's not the most common specific reaction like pain or redness.

Concept Tested & Keywords

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